Lens-holder.



H. S. MILLS. LENS HOLDER. APPLICATION FILED 001" a, was.

929,776. Patented Aug.3,1909.

MTNESSES. /NVENTOR,'

1 0% Z I HERBERT SMILLS, fi- WWfidfl ATTYS.

ANDREW. u. GRAHAM 0a., PMOTO-LIWOGRAPNEHS. WASHINGTON. u. c

HERBERT S. MILLS, OF CHICAGO, ILLINOIS.

LENS-HOLDER.

Specification of Letters Patent.

Patented Aug. 8, 1909.

Application filed October 3, 1908. Serial No. 456,053.

To all whom it may concern:

Be it known that I, HERBERT S. MILLs, a citizen. of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Lensllolders, of which thefollowing is a specification.

My invention is designed primarily for use in moving-picture machines toprovide therein a construction of holder for the projectinglenses in thelens-tube, which shall render the lens-containing case convenientlyadjustable for focusing the lenses and readily removable to facilitateaccess to the lenses for cleaning them.

In the accompanying drawing, Figure it shows my improvement by a view inside elevation; Fig. 2 shows the same by a iew in rear elevation, andFig. 3 is an enlarged longitudinal section on line 3, Fig. 1.

The lens-tube or barrel 4, provided on one end with the taperingextension 5, is usrudly formed, for moving-picture macl'iines, as anintegral part of the cast frame which supports the mechanism of themachine and of which a broken portion is represented at 6 in Figs. 1 and2. The projecting lenses are commonly supplied to the user in acylindrical case 7. For supporting this case in contralized position inthe barrel I provide a tubular holder 8 to receive and conform to thelens-case, the latter having brazed, to it an arm 9, shown bent intorectangular shape and protruding through a longitudinal guideslot 19 inthe holder. The holder 8 is ex panded toward. its rear end to fit theinner circumference of the barrel and is provided with a flange 10 aboutits extremity to abut against the endof the barrel and afford a stoplimiting the extent of inserting the holder into the barrel, in which itis releasably fastened by a thumb-screw 1].. An enlargement or lug 12formed on the expanded portion of the holder contains a longitudinalthreaded opening 13 for a set-screw 14 engaging rotatably at its innerend with the arm 9 and carrying a loclcnut 15 and a milled head 16forming a handle by means of which to manipulate it.

With the holder 8 in place in the barrel, se-

cured by the screw 11, and from which it may, on loosening the screw, beeasily w1thdrawn at the rcarend of the barrel for access to the lenses,as for cleaning them, the holder may be readily adjusted to a nicety byturning the screw 14 to advance or retract 1t in the barrel for focusingthe lenses.

What I claim as new, and desire to secure by Letters Patent, is

1. In combination, a lens-barrel, a lenseasing holder releasablyconfined inthe barrel, a lens-casing adjustably fittmg sald holder andcentralized by it in the barrel, an arm extending from said casing, anda set screw engaging said arm for adjusting the casing, for the purposeset forth.

2. In combination, a lens-barrel, a lenscasing holder provided with aslot and releasably confined in the barrel, a lens-casmg adjustablyfitting said holder and centralized by it in the barrel, an armextending from said casing through said slot, and a set-screw working insaid holder and engaging said arm, for the purpose set forth.

3. In combination, a lens-barrel, a lenscasing holder releasablyconfined 1n the barrel to be removable therefrom at its rear end andprovided with an expanded end-portion fittin g and centralizing theholder in the barrel, a lens-casing adjustably fittmg said holder, anarm extending from said casing, and a set crew engaging said arm foradjusting the holder, for the purpose set forth.

4. In combination, a lens-barrel, a lenscasing holder releasablyconfined in the barrel to be removable therefrom at its rear end an Iprovided with a slot and a flanged and expanded rear-end portion fittingthe inner circumference of the barrel and having an enlargementcontaining a threaded opening, a lens-casing adjustably fitting saidholder, an arm extending from said casing through said slot, and aset-screw working in sand opening with one end rotatably engagmg saidarm and a lock-nut on its outer-end portion, for the purpose set forth.

HERBERT S. MILLS.

In presence of-- K. M. CORNWALL, R. A. SGHAEFER.

